Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and TERRA
TLE Epoch: 2023 4 9.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/11/2023   19:00:10   ( -70.53,  70.49) 04/11/2023   19:00:51  ( -70.54,  70.47)    1.66                41
 04/11/2023   19:50:54   (  70.41,-122.03) 04/11/2023   19:50:14  (  70.44,-122.02)    2.65                40
 04/14/2023   07:54:01   ( -70.52,-122.97) 04/14/2023   07:54:27  ( -70.51,-122.99)    1.43                26
 04/14/2023   08:44:45   (  70.41,  44.51) 04/14/2023   08:43:50  (  70.41,  44.52)    0.55                55
 04/16/2023   19:57:19   (  71.14,-124.78) 04/16/2023   19:58:28  (  71.02,-123.30)   55.12                69
 04/16/2023   20:47:51   ( -70.53,  43.55) 04/16/2023   20:48:01  ( -70.50,  43.58)    2.50                10
 04/16/2023   21:38:35   (  70.42,-148.97) 04/16/2023   21:37:24  (  70.40,-148.91)    2.87                71
 04/19/2023   08:50:59   (  70.58,  42.68) 04/19/2023   08:52:10  (  70.60,  42.65)    2.54                71
 04/19/2023   09:41:41   ( -70.49,-149.85) 04/19/2023   09:41:36  ( -70.47,-149.89)    2.59                 5
 04/19/2023   10:32:16   (  69.91,  18.35) 04/19/2023   10:31:06  (  69.98,  17.07)   49.43                70
 04/21/2023   21:44:50   (  70.61,-150.82) 04/21/2023   21:45:44  (  70.59,-150.78)    2.36                54
 04/21/2023   22:35:31   ( -70.46,  16.73) 04/21/2023   22:35:10  ( -70.46,  16.67)    2.18                21